6 sec at f/10, ISO-100 (Canon EOS 5DIII) Processed results using LR6 and Topaz DeNoise v6
Merrick ButteOriginal - purposfully overexposed, but no highlight warnings
Beautiful. I love the way that Southwesting red rock looks with snow.
Beautiful work, Paul. A bit of phraseology caution. You over exposed nothing. You added, pushed, or extended exposure. Had you over exposed anything, you would have patches of blank white.
--Bob
CHG_CANON wrote:
6 sec at f/10, ISO-100 (Canon EOS 5DIII) Processed results using LR6 and Topaz DeNoise v6
Original - purposfully overexposed, but no highlight warnings
Even at that size the noise isn't visible, even in the smooth areas like the sky. Just out of curiosity, did anything end up getting blown? The reason I'm asking is because that's always going to be the biggest risk when using ETTR or EBTR. Did you have a tactic for knowing if or when the highlights were going to get blown?
R.G. wrote:
Even at that size the noise isn't visible, even in the smooth areas like the sky. Just out of curiosity, did anything end up getting blown? The reason I'm asking is because that's always going to be the biggest risk when using ETTR or EBTR. Did you have a tactic for knowing if or when the highlights were going to get blown?
I use the camera's histogram and highlight warnings. Also, decisions are based on experience with the specific camera model and the RAW files it creates, where blinking highlights don't mean unrecoverable highlights, depending on location and how far over the right boundary of the histogram. The "below" image of the screen capture shows the histogram from DDP on the unprocessed RAW file, pushed well to the right for a nearly dark / late in the blue hour capture, but nothing pushed over the right edge.
CHG_CANON wrote:
I use the camera's histogram and highlight warnings. Also, decisions are based on experience with the specific camera model and the RAW files it creates, where blinking highlights don't mean unrecoverable highlights, depending on location and how far over the right boundary of the histogram. The "below" image of the screen capture shows the histogram from DDP on the unprocessed RAW file, pushed well to the right for a nearly dark / late in the blue hour capture, but nothing pushed over the right edge.
I use the camera's histogram and highlight warning... (
show quote)
Do you know if the highlights warning is jpeg-based? The camera's histogram is, and if you want to know how far beyond the right you can push the exposure you have to evaluate how much ERADR (extra raw available dynamic range) that particular camera has. Each camera has to be assessed individually because they're not all the same.
Gorgeous but could someone explain what ETTR and EBTR is?
Thanks!
R.G. wrote:
Do you know if the highlights warning is jpeg-based? The camera's histogram is, and if you want to know how far beyond the right you can push the exposure you have to evaluate how much ERADR (extra raw available dynamic range) that particular camera has. Each camera has to be assessed individually because they're not all the same.
To answer my own question, the difference between ETTR and EBTR is that with ETTR you don't have to worry about blown highlights because you're staying within the jpeg-oriented limits exposure-wise, as indicated by the histogram (and presumably also by the highlights warnings). It could be argued that if you can safely increase the exposure using ETTR you don't need to take the extra risk of EBTR. Do you know how many stops your shot was over-exposed by?
Very spectacular.
My preference is for the original as it just "jumps" out at me.
Thank you for the links! I remember reading about Exposure To The Right but not Exposure Beyond the Right. I decided not to pursue the subject at the time as I was still trying to wrap my brain around the exposure triangle. My poor brain can only absorb so much at a time. The first article really clicked for me regarding each F\Stop recording half as much light as the previous one with the brightest tones taking most of the data. Now it makes sense to me.
CHG_CANON wrote:
6 sec at f/10, ISO-100 (Canon EOS 5DIII) Processed results using LR6 and Topaz DeNoise v6. ...
What time of day/night did you take that image?
EV=4 suggests that it was not taken in broad daylight. So does the absence of any shadows.
Here’s the long-story-short on EBTR landscape exposure.
1. set you camera for raw capture.
2. find the exposure you would use to get the brightest jpeg image possible without clipping highlights ( That’s the ETTR exposure)
3. ADD to the ETTR exposure your camera’s pre-determined extra raw-accessible dynamic range (ERADR) to the ETTR exposure and ... (note that the camera I used for the example below has one and 1/3 stops of ERADR at base ISO.)
4. squeeze the shutter... and Bob’s your uncle!
Then you will notice that in your camera’s display the your image is washed out with blown highlights!
“Overexposed” you s ream...stamping your feet!
Well.. Aaaaactually......it’s not! Would be, were it a jpeg file, but lucky you, you shot a raw capture and got a perfectly exposed image file of the highest possible image data quality.
Wutcha do next is open it in your raw converter, normalize its tonality by sliding the “Exposure” slider to the left...and lo and behold...there is your tonally perfect image...and nary a clipped highlight to be found!
Dave
Uuglypher wrote:
.....you scream...stamping your feet!........
Hey, you've been spying on me
.
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